CN209784232U - Dilatometer for neutron diffraction spectrometer - Google Patents
Dilatometer for neutron diffraction spectrometer Download PDFInfo
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- CN209784232U CN209784232U CN201822259850.XU CN201822259850U CN209784232U CN 209784232 U CN209784232 U CN 209784232U CN 201822259850 U CN201822259850 U CN 201822259850U CN 209784232 U CN209784232 U CN 209784232U
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- dilatometer
- neutron diffraction
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- neutron
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Abstract
The utility model discloses an dilatometer for neutron diffraction spectrometer, an inside residual stress and the coefficient of expansion for detect sample, neutron diffraction spectrometer's dilatometer includes sealed container, the sample is acceptd in sealed container, neutron diffraction spectrometer's dilatometer still includes balanced clamping structure, balanced clamping structure includes splint, the center pivot, two link structure and two supporting rods, the center pivot is rotated and is installed in splint, each link structure slidable mounting is in splint, and one end is rotated with the center pivot and is connected, the other end and a supporting rod fixed connection, sealed container centre gripping sample is stretched into to two supporting rods, when the sample inflation, balanced clamping structure keeps sample central point to put unchangeably, when making many times experiments, neutron stress measurement position is unchangeable.
Description
Technical Field
the utility model relates to an dilatometer especially relates to an dilatometer for neutron diffraction spectrometer.
Background
In-situ testing of metallic materials is typically performed at high or low temperatures, such as for measuring expansion coefficients, internal stresses, phase transitions, and the like. In order to establish the relationship between the phase change characteristics and the internal residual stress of the metal material, two experiments are usually required, so that effective data relation cannot be established by the experiments. When the in-situ stress measurement and the expansion coefficient measurement are respectively carried out on the same sample, the identity of the measurement position cannot be ensured, and the expansion coefficient of the sample or the internal microstructure structure is changed due to twice heating. Therefore, the development of the dilatometer which ensures that the measuring position of the sample does not change along with the temperature is of great significance.
SUMMERY OF THE UTILITY MODEL
in order to overcome the defects of the prior art, the utility model aims to provide a during normal position experiment, inside residual stress and the coefficient of expansion of simultaneous measurement to guarantee to measure the invariable dilatometer that is used for neutron diffraction spectrometer of central point position.
The purpose of the utility model is realized by adopting the following technical scheme:
The utility model provides an dilatometer for neutron diffraction spectrometer for the stress of testing sample, the dilatometer of neutron diffraction spectrometer includes sealed container, the sample accept in sealed container, the dilatometer of neutron diffraction spectrometer still includes balanced clamping structure, balanced clamping structure includes splint, central pivot, two link structure and two holding rods, the central pivot rotate install in splint, each link structure slidable mounting in splint, and one end with the central pivot rotates to be connected, the other end and one holding rod fixed connection, two the holding rod stretches into the sealed container centre gripping the sample, when the sample inflation, balanced clamping structure keeps the sample central point puts unchangeably.
Further, the dilatometer for the neutron diffraction spectrometer further comprises two adjusting structures, each adjusting structure comprises a rotating bolt and an elastic piece, the rotating bolt is rotatably installed on the clamping plate, and two ends of the elastic piece are respectively abutted to the rotating bolt and the connecting rod structure.
Further, the connecting rod structure comprises a connecting rod body and a connecting hinge, one end of the connecting rod body is rotatably connected with the central rotating shaft, the other end of the connecting rod body is rotatably connected with the connecting hinge, and the connecting rod body is slidably installed on the clamping plate and fixedly connected with the clamping rods.
Further, the elastic member interferes with the connection hinge.
Further, the elastic member is parallel to the clamping bar.
Further, the dilatometer for the neutron diffraction spectrometer further comprises a torque sensor, wherein the torque sensor is mounted on the connecting rod structure, and the rotating bolt is adjusted through the reading of the torque sensor.
Further, the dilatometer for the neutron diffraction spectrometer further comprises an absolute encoder, wherein the absolute encoder is mounted on the central rotating shaft to measure the rotation quantity of the central rotating shaft, so that the expansion quantity of the sample can be calculated.
Further, the dilatometer for the neutron diffraction spectrometer further comprises a temperature control structure, wherein the temperature control structure comprises a heating device and a temperature measuring device, the heating device is positioned in the sealed container to heat the sample, and the temperature measuring device is fixed on the sample and controls the temperature of the sample.
Further, the temperature measuring device is a patch thermocouple.
Further, the sealed container is vacuum or filled with inert gas.
compared with the prior art, the utility model discloses an dilatometer for neutron diffraction spectrometer still includes balanced clamping structure, torque sensor and absolute encoder, balanced clamping structure includes splint, the central pivot, two link structure and two supporting rods, the central pivot is rotated and is installed in splint, each link structure slidable mounting is in splint, and one end rotates with the central pivot and is connected, the other end and a supporting rod fixed connection, two supporting rods stretch into sealed container centre gripping sample, when the sample inflation, balanced clamping structure keeps sample central point to put unchangeably, when making the experiment many times, neutron stress measurement position is more stable.
Drawings
Fig. 1 is a perspective view of the dilatometer for a neutron diffraction spectrometer of the present invention;
FIG. 2 is a front view of the dilatometer for a neutron diffraction spectrometer of FIG. 1;
FIG. 3 is a schematic diagram of the internal structure of the dilatometer for a neutron diffraction spectrometer of FIG. 1;
FIG. 4 is a perspective view of the internal structure of the dilatometer for a neutron diffraction spectrometer of FIG. 3;
FIG. 5 is a top view of the dilatometer for a neutron diffraction spectrometer of FIG. 1;
Fig. 6 is a schematic diagram of the dilatometer for a neutron diffraction spectrometer of fig. 1 in use.
In the figure: 100. dilatometers for neutron diffraction spectrometers; 10. a base; 20. sealing the container; 30. a temperature control structure; 31. a heating device; 32. a temperature measuring device; 40. a balance clamping structure; 41. a splint; 42. a central rotating shaft; 43. a connecting rod structure; 430. a connecting rod body; 431. a connecting hinge; 44. a clamping rod; 50. adjusting the structure; 51. rotating the bolt; 52. an elastic member; 60. a torque sensor; 70. an absolute encoder; 200. a sample; 300. a collimator; 400. a neutron detector; 500. a neutron beam.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, secured by intervening elements. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly disposed on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 5, the dilatometer 100 for a neutron diffraction spectrometer of the present invention is used for measuring the stress of a sample 200, and the dilatometer 100 for a neutron diffraction spectrometer includes a base 10, a sealing container 20, a temperature control structure 30, a balance clamping structure 40, two adjusting structures 50, a torque sensor 60, and an absolute encoder 70.
The hermetic container 20 is mounted on the base 10. The containment vessel 20 is made of aluminum material of uniform thickness to ensure that the attenuation of incident and scattered neutrons is uniform at all angles. The sealed container 20 is evacuated or filled with an inert gas to prevent oxidation of the sample 200 in a relatively high temperature environment. The sealed container 20 is a cylindrical sealed hollow structure, and can realize irradiation of neutrons in any direction, and the attenuation degrees of scattered neutrons and X-rays are basically the same.
The temperature control structure 30 includes a heating device 31 and a temperature measuring device 32. The heating device 31 is fixed to the susceptor 10 and has a spiral shape. The sample 200 is located in the heating device 31, and the heating device 31 heats the sample 200. The temperature measuring device 32 is fixed on the surface of the sample 200 by welding, and measures the temperature of the sample 200. In one embodiment, the heating device 31 is a heating coil and the temperature measuring device 32 is a patch thermocouple. The heating device 31 and the temperature measuring device 32 are connected to an external device through terminals of the base 10.
the balance clamping structure 40 includes a clamping plate 41, a central rotating shaft 42, two link structures 43 and two clamping rods 44. The central rotating shaft 42 is rotatably mounted to the chucking plate 41. Each link structure 43 includes a link body 430 and a connecting hinge 431. The end of the link body 430 is rotatably connected to the central rotating shaft 42. The connection hinge 431 is slidably installed at the clamping plate 41 and rotatably connected with the other end of the link body 430. Each clamping rod 44 is fixedly installed at the connecting hinge 431 and extends into the hermetic container 20. The sample 200 is clamped between the two clamping bars 44. The clamping rods 44 are made of quartz, reducing systematic errors caused by temperature variations.
each adjustment structure 50 includes a rotating bolt 51 and an elastic member 52. The rotating bolt 51 is rotatably installed to the clamping plate 41, and one end of the elastic member 52 is abutted against the rotating bolt 51 and the other end is abutted against the connecting hinge 431. The elastic member 52 is a spring. The torque sensor 60 is attached to the link structure 43, and the rotation bolt 51 is adjusted by the reading of the torque sensor 60. The absolute encoder 70 is installed at the central rotating shaft 42 to measure the rotation amount of the central rotating shaft 42 so as to calculate the expansion amount of the sample 200.
With continued reference to fig. 6, when a stress measurement of the sample 200 is performed using the dilatometer 100 for a neutron diffraction spectrometer, two neutron detectors 400 are arranged in a direction perpendicular to the neutron beam 500 and aligned with the measurement position of the sample 200. To avoid blocking the neutron beam 500 and scattering neutrons, the dilatometer 100 for a neutron diffraction spectrometer needs to be arranged at 45 ° to the neutron beam 500. At this time, the included angle between the X-ray and the neutron beam is 45 degrees, and the two measurement methods can be respectively tested and do not interfere with each other. Collimators 300 are respectively arranged on both sides of the dilatometer 100 for the neutron diffraction spectrometer, and the neutron detector 400, the collimator 300 and the dilatometer 100 for the neutron diffraction spectrometer are positioned on a straight line.
When the sample 200 is expanded, the balance clamping structure 40 keeps the central position of the sample 200 unchanged, so that the neutron stress measurement position is more stable during multiple experiments. The clamping rods 44 are made of quartz, reducing systematic errors caused by temperature variations. The resilient member 52 of the adjustment structure 50 allows the pressure applied to the sample 200 to be controlled to prevent the sample 200 from disengaging from the support structure. The central rotating shaft 42 is provided with a precision angle measuring device for measuring the amount of expansion. The central spindle 42 is provided with a precision torque measuring device for measuring the pre-clamping force. The dilatometer 100 for a neutron diffraction spectrometer is arranged at 45 degrees to the neutron beam 500, so that thermal expansion measurement and neutron stress measurement can be carried out simultaneously without mutual interference. The sealed container 20 has a cylindrical closed hollow structure, so that irradiation of neutrons in any direction can be realized, and the attenuation degrees of scattered neutrons and X-rays are basically the same. The cylindrical closed structure of the sealed container 20 is made of aluminum metal material, so that the attenuation effect on neutrons is reduced. The sealed container 20 has a closed inner cavity, and can be evacuated and filled with inert gas to prevent the sample 200 from being oxidized in a low-temperature environment. The measuring structure is positioned outside the closed cavity, is not influenced by internal high temperature, and can realize high-precision displacement measurement of the sample 200.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.
Claims (10)
1. An dilatometer for a neutron diffraction spectrometer, for detecting internal residual stress and expansion coefficient of a sample, the dilatometer for the neutron diffraction spectrometer comprising a sealed container, the sample being contained in the sealed container, characterized in that: the dilatometer of neutron diffraction spectrometer still includes balanced clamping structure, balanced clamping structure includes splint, central pivot, two link structure and two supporting rods, the central pivot rotate install in splint, each link structure slidable mounting in splint, and one end with the central pivot rotates to be connected, the other end with one supporting rod fixed connection, two the supporting rod stretches into the sealed container centre gripping the sample, when during the sample inflation, balanced clamping structure keeps sample central point puts unchangeably.
2. The dilatometer for neutron diffraction spectrometers of claim 1, wherein: the dilatometer for the neutron diffraction spectrometer further comprises two adjusting structures, each adjusting structure comprises a rotating bolt and an elastic piece, the rotating bolt is rotatably installed on the clamping plate, and two ends of the elastic piece are respectively abutted against the rotating bolt and the connecting rod structure.
3. Dilatometer for neutron diffraction spectrometers according to claim 2, characterised in that: the connecting rod structure comprises a connecting rod body and a connecting hinge, one end of the connecting rod body is rotatably connected with the central rotating shaft, the other end of the connecting rod body is rotatably connected with the connecting hinge, and the connecting rod body is slidably installed on the clamping plate and fixedly connected with the clamping rods.
4. Dilatometer for neutron diffraction spectrometers according to claim 3, characterised in that: the elastic member abuts against the connection hinge.
5. Dilatometer for neutron diffraction spectrometers according to claim 4, characterised in that: the elastic piece is parallel to the clamping rod.
6. Dilatometer for neutron diffraction spectrometers according to claim 2, characterised in that: the dilatometer for the neutron diffraction spectrometer further comprises a torque sensor, wherein the torque sensor is mounted on the connecting rod structure, and the rotating bolt is adjusted through the reading of the torque sensor.
7. The dilatometer for neutron diffraction spectrometers of claim 1, wherein: the dilatometer for the neutron diffraction spectrometer further comprises an absolute encoder, wherein the absolute encoder is mounted on the central rotating shaft for measuring the rotation quantity of the central rotating shaft, so that the expansion quantity of the sample can be calculated.
8. The dilatometer for neutron diffraction spectrometers of claim 1, wherein: the dilatometer for the neutron diffraction spectrometer further comprises a temperature control structure, wherein the temperature control structure comprises a heating device and a temperature measuring device, the heating device is positioned in the sealed container to heat the sample, and the temperature measuring device is fixed on the sample and controls the temperature of the sample.
9. The dilatometer for neutron diffraction spectrometers of claim 8, wherein: the temperature measuring device is a patch thermocouple.
10. The dilatometer for neutron diffraction spectrometers of claim 1, wherein: the sealed container is vacuum or filled with inert gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822259850.XU CN209784232U (en) | 2018-12-30 | 2018-12-30 | Dilatometer for neutron diffraction spectrometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822259850.XU CN209784232U (en) | 2018-12-30 | 2018-12-30 | Dilatometer for neutron diffraction spectrometer |
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| CN209784232U true CN209784232U (en) | 2019-12-13 |
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| CN201822259850.XU Active CN209784232U (en) | 2018-12-30 | 2018-12-30 | Dilatometer for neutron diffraction spectrometer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813749A (en) * | 2018-12-30 | 2019-05-28 | 东莞材料基因高等理工研究院 | A kind of dilatometer for Neutron diffractometer |
| CN115266776A (en) * | 2022-09-15 | 2022-11-01 | 深圳市伟铭光电有限公司 | Nondestructive testing device for X-ray steel cylinder |
-
2018
- 2018-12-30 CN CN201822259850.XU patent/CN209784232U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813749A (en) * | 2018-12-30 | 2019-05-28 | 东莞材料基因高等理工研究院 | A kind of dilatometer for Neutron diffractometer |
| CN115266776A (en) * | 2022-09-15 | 2022-11-01 | 深圳市伟铭光电有限公司 | Nondestructive testing device for X-ray steel cylinder |
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